gistfile1.cs

string solutionPath = @"C:\Users\...\PathToSolution\MySolution.sln";
var msWorkspace = MSBuildWorkspace.Create();

var solution = msWorkspace.OpenSolutionAsync(solutionPath).Result;
foreach (var project in solution.Projects)
{
	foreach (var document in project.Documents)
	{
		Console.WriteLine(project.Name + "\t\t\t" + document.Name);
	}
}